BackTime.528
Description BackTime.528
This is a dangerous memory-resident virus. It hooks INT 8 (timer), and INT 21h and hits COM files by a standard way when they are executed.
The virus contains the text "BackTime". This virus sets the system timer in back direction: when the INT 8 is called the virus decrements the content of timer counter. At a result the programs that uses the timer characteristics of computer (like a BenchMarks) are hang-up.
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July13 Family
Description July13 Family
These are very dangerous nonmemory resident encrypted parasitic viruses. They search and write themselves to the end of EXE files. They may corrupt the COM files that have .EXE extension. On July, 13th they leave a small memory resident program that hooks INT 8 and displays the running balls (see "Ping-Pong" virus).
July16.594
Description July16.594
It is a dangerous nonmemory resident parasitic virus. It searches for COM files, then writes itself to the end of the file. It also searches for *.TX* files, then writes the text to the file:
Need you, Dream you
Find you, Taste you
Fuck you, Use you
Scar you, Break you
Lose me, Hate me
Smash me, Erase me
On July 16 the virus displays the text:
Happy Birthday Christine!
Your As Beautiful As Ever
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